A bimolecular reaction typically takes twice as long as a unimolecular reaction. The answer is true
<h3>
How is activation energy related to temperature?</h3>
- Consider what must occur for ClNO2 to react with NO to understand why reactions have an activation energy.
- First and foremost, these two molecules must clash in order to organise the system.
- Not only must they be brought together, but they must also be kept in precisely the appropriate orientation relative to one other in order for the reaction to occur.
- Some energy must also be used in order to break the Cl-NO2 bond and allow the Cl-NO bond to form.
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Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample contains 0.0011% Pb by mass. 13.6 × 10³ ml water contains 150 mg of Pb.
<h3>How to calculate the mass of solution ? </h3>
Given percentage of Pb present in the sample solution is 0.0011%
That means 0.0011 grams of Pb present in the 100g of solution.
So,
=
= 13.6 × 10³ g water
<h3>What is Density ? </h3>
The mass per unit volume is called density. Density is represented as D or ρ.
It is expressed as:
where,
ρ = Density
m = mass of the object
V = Volume of object
Now put the value in above expression we get
V = 13.6 × 10³ ml
Thus from the above conclusion we can say that Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample contains 0.0011% Pb by mass. 13.6 × 10³ ml water contains 150 mg of Pb.
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Answer:
uhhh i do not know this but we are learning at my school i could give you the answer soon i you want
Explanation:
Tungsten (W) is the element
Double replacement. The metal ions have exchanged partners.
“Single replacement” is <em>incorrect</em>. In single displacement, <em>one element displaces another element</em> in a compound.
“Decomposition” is <em>incorrect</em>. In decomposition, a <em>single substance</em> changes into two or more substances.
“Combustion” is <em>incorrect </em>because it usually involves a <em>reaction with oxygen</em>
.